SAMWONTECH
1st Edition of TEMI2000_Series IM : Dec. 15. 2008 Page 5 / 58
4. Wiring for Communication
Connector wiring between TEMI2500 and network system depends on communication interface setting
(RS232C/RS485).
█ Modular Connector Pin-Mapping for COM2 port
█ Description of Modular Connector Pin-Mapping for COM2 port
RS232C
RS485
PIN no.
Signal
Symbol
Signal
Symbol
1
Transmit Data
TxD
Receive/Transmit Data -
RTX-
2
Receive Data
RxD
Receive/Transmit Data +
RTX+
3
Signal Ground
SG
Signal Ground
SG
4
-
-
-
-
5
-
-
-
-
6
-
-
-
-
6
5
4
3
2
1
SG
RxD
TxD
6
5
4
3
2
1
SG
RTX+
RTX-
RS485
RS232C